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/*
* <rdar://problem/29301703> Skywalk: Add unit tests to check that flowswitch can grow beyond 64 ports
*
* * create a flowswitch and ifattach a netif (feth0) underneath
* * open 63 channels from userland to the flowswitch
*
*/
#include <assert.h>
#include <unistd.h>
#include <sys/resource.h>
#include <darwintest.h>
#include "skywalk_test_common.h"
#include "skywalk_test_driver.h"
#include "skywalk_test_utils.h"
#include <skywalk/os_nexus.h>
static int
skt_fsw29301703_common(int nchannels)
{
int error;
int result = 0;
nexus_controller_t ncd;
uuid_t netif_provider;
uuid_t netif_instance;
uuid_t netif_attach;
uuid_t fsw_provider;
uuid_t fsw_instance;
uuid_t fsw_if_attach;
channel_t channels[nchannels];
struct sktc_nexus_attr attr = SKTC_NEXUS_ATTR_INIT();
sktc_raise_file_limit(nchannels + 10);
ncd = os_nexus_controller_create();
assert(ncd);
/* create the fsw */
strncpy((char *)attr.name, "skt_fsw29301703", sizeof(nexus_name_t) - 1);
attr.type = NEXUS_TYPE_FLOW_SWITCH;
attr.anonymous = 1;
sktc_build_nexus(ncd, &attr, &fsw_provider, &fsw_instance);
/* Create a netif */
strncpy((char *)attr.name, "skt_29301703_netif",
sizeof(nexus_name_t) - 1);
attr.type = NEXUS_TYPE_NET_IF;
sktc_build_nexus(ncd, &attr, &netif_provider, &netif_instance);
error = __os_nexus_ifattach(ncd, netif_instance, FETH0_NAME, NULL,
false, &netif_attach);
/* attach the netif to the fsw */
error = __os_nexus_ifattach(ncd, fsw_instance, NULL, netif_instance,
false, &fsw_if_attach);
SKTC_ASSERT_ERR(!error);
/* must fail without user packet pool set (flow switch) */
assert(sktu_channel_create_extended(fsw_instance, 2,
CHANNEL_DIR_TX_RX, CHANNEL_RING_ID_ANY, NULL,
-1, -1, -1, -1, -1, -1, -1, 1, -1, -1) == NULL);
/* open many channels from userland to the flowswitch */
/* Start with channel 1 because presumably the feth0 has channel 0 */
/* XXX we should be able to use NEXUS_PORT_ANY here instead */
for (int i = 0; i < sizeof(channels) / sizeof(channels[0]); i++) {
channels[i] = sktu_channel_create_extended(fsw_instance, 2 + i,
CHANNEL_DIR_TX_RX, CHANNEL_RING_ID_ANY, NULL,
-1, -1, -1, -1, -1, -1, 1, 1, -1, -1);
if (!channels[i]) {
SKT_LOG("failed on channel %d errno %d\n", 1 + i, errno);
result = 1;
break;
}
}
return result;
}
static int
skt_fsw29301703a_main(int argc, char *argv[])
{
return skt_fsw29301703_common(63);
}
static int
skt_fsw29301703b_main(int argc, char *argv[])
{
return skt_fsw29301703_common(200);
}
static int
skt_fsw29301703c_main(int argc, char *argv[])
{
/* Expect failure */
/* The 4100 here is because NX_FSW_VP_MAX is currently 4096 in nx_flowswitch.h
* Howveer, we now hit <rdar://problem/34922770> opening too many channels to flowswitch panics in allocator
*/
int error = skt_fsw29301703_common(4100);
assert(error);
return 0;
}
struct skywalk_test skt_fsw29301703a = {
"fsw29301703a", "open 63 channels to a flow switch",
SK_FEATURE_SKYWALK | SK_FEATURE_NEXUS_NETIF | SK_FEATURE_NEXUS_FLOWSWITCH,
skt_fsw29301703a_main, { NULL },
sktc_ifnet_feth0_create, sktc_ifnet_feth0_destroy,
};
struct skywalk_test skt_fsw29301703b = {
"fsw29301703b", "open 200 channels to a flow switch",
SK_FEATURE_SKYWALK | SK_FEATURE_NEXUS_NETIF | SK_FEATURE_NEXUS_FLOWSWITCH,
skt_fsw29301703b_main, { NULL },
sktc_ifnet_feth0_create, sktc_ifnet_feth0_destroy,
};
struct skywalk_test skt_fsw29301703c = {
"fsw29301703c", "open too many channels to a flow switch",
SK_FEATURE_SKYWALK | SK_FEATURE_NEXUS_NETIF | SK_FEATURE_NEXUS_FLOWSWITCH,
skt_fsw29301703c_main, { NULL },
sktc_ifnet_feth0_create, sktc_ifnet_feth0_destroy,
};